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Finding the Fourth Proportional to 164.03, 226.32 and 122.72

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Solution

The fourth proportional to 164.03, 226.32 and 122.72 is: 169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.03 : 226.32 = 122.72 : x
  2. Step 2: Convert to fraction form
    164.03/226.32 = 122.72/x
  3. Step 3: Cross multiply
    164.03x = 226.32 × 122.72
  4. Step 4: Simplify right side
    164.03x = 27,773.99
  5. Step 5: Solve for x
    x = 27,773.99/164.03
  6. Step 6: Final answer
    x = 169.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.